The nuclear envelope is a membrane system which surrounds the nucleoplasm of eukaryotic cells. It is composed of the nuclear lamina, nuclear pore complexes and two nuclear membranes. The space between the two membranes is called the nuclear intermembrane space.
The nuclear pore complex (NPC) constitutes the exclusive means of nucleocytoplasmic transport. NPCs allow the passive diffusion of ions and small molecules and the active bidirectional transport of macromolecules such as proteins, RNAs etc across the double-membrane nuclear envelope.The NPC is composed of at least 30 distinct subunits known as Nucleoporins (NUPs).
Component of the nuclear pore complex (NPC), a complex required for the trafficking across the nuclear envelope (PubMed:17682050). Essential for the nuclear import of nuclear localization signal (NLS)-containing proteins in an importin alpha/importin beta-dependent manner (PubMed:17682050). Together with Nup58, required for transposable element silencing regulation in ovarian follicle cells (PubMed:33856346). By interacting with the nuclear (Nxf1/Nxt1) and cytosolic (fs(1)Yb) components of the flamenco (flam) transcripts processing pathway, enables export and subsequent piRNA production (PubMed:33856346). {Experimental EvidencePubMed:17682050, Experimental EvidencePubMed:33856346}.
National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory